Recent Examples on the WebSpecifically, adding a GTP (guanosine triphosphate) monomer to a microtubule corresponds to a car parking after the right-most car in the idealized lot. Jennifer Ouellette, Wired, 3 Oct. 2019 Specifically, adding a GTP (guanosine triphosphate) monomer to a microtubule corresponds to a car parking after the rightmost car in the idealized lot. Jennifer Ouellette, Ars Technica, 26 Sep. 2019